stealc | 73bf8e4a7d1baa981576bd9789ca7b13f9e53424dc283000474753ef51c11f4a

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 02:43

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General

Target

73bf8e4a7d1baa981576bd9789ca7b13f9e53424dc283000474753ef51c11f4a.exe
Size

1.7MB
MD5

cd917c036da4dc2b3e30e12b135a87e2
SHA1

e1d0a610ebc4d4500d01ce193a803a94542893dd
SHA256

73bf8e4a7d1baa981576bd9789ca7b13f9e53424dc283000474753ef51c11f4a
SHA512

8f095fb21086ef7cf673f8eee5218592e7c0cf1397a2b4b11b7b5f29c0b6f194f1f1c8961b9218094146022d64d0093251d57d419a09b61d7a0571672b96c2fb
SSDEEP

24576:FXRnTWS9M6G832tc8aegrm2rIEjvWDBqE0A+hBcwbPna7r4EK5DwUoza:FBaSm6nCaetEKDcH+7rD5U1

Score

10^/10

stealc stok discovery evasion stealer

Malware Config

Extracted

Family

stealc

Botnet

stok

http://185.215.113.206

Attributes

url_path
/c4becf79229cb002.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	73bf8e4a7d1baa981576bd9789ca7b13f9e53424dc283000474753ef51c11f4a.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	73bf8e4a7d1baa981576bd9789ca7b13f9e53424dc283000474753ef51c11f4a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	73bf8e4a7d1baa981576bd9789ca7b13f9e53424dc283000474753ef51c11f4a.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	73bf8e4a7d1baa981576bd9789ca7b13f9e53424dc283000474753ef51c11f4a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2692	73bf8e4a7d1baa981576bd9789ca7b13f9e53424dc283000474753ef51c11f4a.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	73bf8e4a7d1baa981576bd9789ca7b13f9e53424dc283000474753ef51c11f4a.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2692	73bf8e4a7d1baa981576bd9789ca7b13f9e53424dc283000474753ef51c11f4a.exe

C:\Users\Admin\AppData\Local\Temp\73bf8e4a7d1baa981576bd9789ca7b13f9e53424dc283000474753ef51c11f4a.exe
"C:\Users\Admin\AppData\Local\Temp\73bf8e4a7d1baa981576bd9789ca7b13f9e53424dc283000474753ef51c11f4a.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2692-0-0x0000000001350000-0x00000000019E9000-memory.dmp

Filesize
6.6MB

Download
memory/2692-1-0x00000000778B0000-0x00000000778B2000-memory.dmp

Filesize
8KB

Download
memory/2692-2-0x0000000001351000-0x0000000001368000-memory.dmp

Filesize
92KB

Download
memory/2692-3-0x0000000001350000-0x00000000019E9000-memory.dmp

Filesize
6.6MB

Download
memory/2692-4-0x0000000001350000-0x00000000019E9000-memory.dmp

Filesize
6.6MB

Download